# /usr/bin/python3

# Author: 爱编程的章老师
# @Time: 2021/1/9 0009
# E-mail: Bluesand2010@163.com

'''设计一个打砖块的游戏'''
# 1. 开局屏幕上方有4行每行10个砖块
# 2. 在屏幕下方有一个长100 的挡板
# 3. 有一个小球从挡板中间出发,45角方向

import pygame
import sys
import time

# 主程序
def main():
    pygame.init()
    screen = pygame.display.set_mode((800, 600))
    pygame.display.set_caption("打砖块V.01 by 爱编程的章老师")
    # 定义颜色
    color1 = 255, 0 ,0  # 目标砖块的颜色
    color2 = 0, 255, 0  # 挡板的颜色
    color3 = 0, 0, 255  # 球的颜色
    font_color = 255, 255, 255  # 字体颜色

    # 生成目标砖块
    rect_list = []
    for i in range(10):
        for j in range(6):
            rect_temp = pygame.Rect(i * 78 + 10, j*20 + 60, 75, 17)
            rect_list.append(rect_temp)
    # 定义挡板
    rect_b = pygame.Rect(350, 550, 100, 15)
    # 定义小球
    ball = pygame.Rect(380, 520, 30, 30)

    # 定义分数字体对象
    font = pygame.font.SysFont("fangsong", 20)

    # 画初始图形
    for r in rect_list:  # 画目标砖块
        pygame.draw.rect(screen, color1, r)
    pygame.draw.rect(screen,color2, rect_b)  # 画挡板
    pygame.draw.ellipse(screen, color3, ball) # 画小球

    # 绘制分数
    score_surface = font.render("分数:0", True, font_color)
    screen.blit(score_surface, (10, 15))

    # 更新屏幕
    pygame.display.update()


    # 小球移动方向
    dx = dy = -1
    # 小球移动幅度
    step = 5
    # 分数
    score = 0

    # 主程序
    while 1:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
        # 按键检测
        keys = pygame.key.get_pressed()
        # 左移挡板
        if keys[pygame.K_LEFT] or keys[pygame.K_a]:
            if rect_b.left - 10 >= 0:
                rect_b.left -= 10
        # 右移挡板
        if keys[pygame.K_RIGHT] or keys[pygame.K_d]:
            if rect_b.right + 10 <= 800:
                rect_b.right += 10

        # 小球移动
        ball.move_ip(dx * step, dy * step)

        # 小球碰撞检测

        # 撞到挡板, 或者撞到屏幕上边缘就上下反方向
        if ball.colliderect(rect_b) or ball.top <=0 :
            dy *= -1

        # 撞到左右屏幕边缘就左右反向
        if ball.left <= 0 or ball.right >= 800:
            dx *= -1

        # 检测有没有撞到目标砖
        for each in rect_list:
            if ball.colliderect(each):
                if ball.left <= each.right and each.center[0] > each.center[0]:
                    dx *= -1
                elif ball.right >= each.left and each.center[0] < each.center[0]:
                    dx *= -1
                elif ball.top <= each.bottom and ball.center[1] > each.center[1]:
                    dy *= -1
                elif ball.bottom >= each.top and ball.center[1] < each.center[1]:
                    dy *= -1
                rect_list.remove(each)
                score += 100
                break

        # 没接到球,游戏失败
        if ball.bottom > rect_b.bottom:
            font = pygame.font.SysFont("fangsong",50)
            font_surface = font.render("游戏失败", True, color1)
            screen.blit(font_surface, (400- 100, 300-25))
            pygame.display.update()
            break

        # 方块打完了,游戏胜利
        if not rect_list:
            font = pygame.font.SysFont("fangsong",50)
            font_surface = font.render("游戏胜利", True, color1)
            screen.blit(font_surface, (400- 100, 300-25))
            pygame.display.update()
            break

        # 清空屏幕
        screen.fill((0,0,0))

        # 绘制图形
        font_surface = font.render("分数:" + str(score), True, font_color)
        screen.blit(font_surface, (10, 15))

        for each in rect_list:
            pygame.draw.rect(screen, color1, each)

        pygame.draw.rect(screen, color2, rect_b)
        pygame.draw.ellipse(screen, color3, ball)
        pygame.display.update()
        time.sleep(0.05)


# 主程序
if __name__ == '__main__':
    main()